Improvement in pumps



W. I-I. GARLOCK & R. COOKE.`

Pump..

Patented J u|y 1.1879.

N.PErERs. PHOTO-UTHQGRAPHER, WASMINMON, D. c.

' UNITED STATES PATENT OEEIcE.

WILLIAM H. GARLOGK AND RIGHARD'OOOKE, OF` DENISON, TEXAS.'

IMPROVEMENT IN PUMPS.

Speciiication forming part of Letters Patent No. 217,089, dated July 1, 1879; application 'liled March 20, 1879.

l ence being had to the annexed drawings, making a part of this specification, and to the let ters and figures of reference marked thereon. Figure l ot' the drawings is arepresentation of a longitudinal central section of my improved pump, and Figs. Zand 3 are details.

This invention has relation to improvements in double-acting pumps.

` The object of the invention is to devise a pump of this description having a series ot valves, inducts, and educts, the valves working in a chamber, the whole arranged and'.

constructed in such a manner as to allow the admission of waterat one end of and its discharge at the other.

The nature of the invention consists in the combination and arrangement of the various devices used, as will be hereinafter more fully shown and described.

In the annexed drawings, the letter Adesignates the barrel or cylinder of the pump,

having arranged therein, in the usual manner,

a piston or plunger, B, actuated by a rod, B', extending through a stutlingbox, c, in one of the heads G. l

c c' designate passages opening into the cylinder at or near the end of the barrel A, and, extending inward toward each other, carried through the said barrel. These passages coincide, respectively, with ducts d d1, leading into a chamber, D, rigidly secured in anysuitable manner to the barrel A, and having an educt or nozzle, d2, leading into an air-chamber when thisdevice is used as a force-pump. At each side ofi this educt, within the chamber and inside of the ducts d di, are formed the valve-seats c c', the same being annular, preferably beveled shoulders cast or otherwise formed in the said chamber. Between these shoulders, inside of the chamber, is an endwise-movable valve, f, having collars 'i c", fitting snugly against the beveled shoulders aforesaid, and provided at each end with guidestems s, working in a reduced or narrowed portion of the said chamber outside of the valve-seats c c. These guide-stems are usually composed of two plates, j, at right angles to each other, as shown in Fig. 2; but any description of stem will suffice, provided it be made in open-work or skeleton form, and tit neatly in the reduced passages l exterior to the collars or seats e c.

The chamber D is open at each end, and inside of said openings are other valve-seats, n,

working in connection with which are theh valves o o.

The seats n are beveled, as shown in Fig. l, and the body of each ot' the valves. o o is correspondingly beveled to form ti ght joints with the seats. Each of these valves has a stem, s', of skeleton form, or of crossed blades j', as above described, projecting through a reduced passage, l', at the ends of the chamber D. The inward movements of these valves are con-V trolled by means of a rod, m, extending diametrically through the passage l', as shown in Fig. l.

The chamber D is usually made in four sections, S Sl S2 S3, ljoined together by screw or tlange joints. This is. done with a View to the truing of the Valveseats, and to securing the exact coincidence of theducts d dl and passages c c', as well as for the introduction of the valves.

The operation of t'he pump is as follows: The piston moving in the direction of the arrow creates a partial vacuum, which causes the valve o to rise from its seat n, and the valve f to close upon its seat e, opening a passage between the opposite seat, c', the duct dl and educt d2, and o to close upon its seat n. Water consequently is drawn through the passages Z" Z, duct d, and passage cinto the pump. The water on the other side of the piston is jforced through passage c', duct d1, passage l,

What We claim as new, and desire to secure In testimony that We claim ,the above we by Letters Patent, ishave hereunto subscribed oui` names in the In a doubleaetng pump, the combination, presenee of two Witnesses.

' With the barrel A and piston B, the barrel having the passages c c', of a chamber, D, WILLIAM H. GARLOGK. open at each end, and having ducts (ld, eorn- RICHARD COOKE. munioating with said passages, the inside valve-seats, c e', an outlet, d2, between said Witnesses:

seats, the valve-seats near the ends of the said JOHN G. WEST,

chamber, and the valves o o and f, the Whole JOHN J. WENDORFER.

Y* arranged and operating as set forth. 

